ℋ2 Guaranteed Cost Computation Of Discretized Uncertain Continuous-time Systems

dc.creatorBraga M.F.
dc.creatorMorais C.F.
dc.creatorTognetti E.S.
dc.creatorOliveira R.C.L.F.
dc.creatorPeres P.L.D.
dc.date2014
dc.date2015-06-25T18:05:52Z
dc.date2015-11-26T15:06:51Z
dc.date2015-06-25T18:05:52Z
dc.date2015-11-26T15:06:51Z
dc.date.accessioned2018-03-28T22:17:15Z
dc.date.available2018-03-28T22:17:15Z
dc.identifier9781479932726
dc.identifierProceedings Of The American Control Conference. Institute Of Electrical And Electronics Engineers Inc., v. , n. , p. 5073 - 5078, 2014.
dc.identifier7431619
dc.identifier10.1109/ACC.2014.6858764
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84905706998&partnerID=40&md5=ac8f97909ac2c4ee9bdb0832de0903a8
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/88186
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/88186
dc.identifier2-s2.0-84905706998
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1257319
dc.descriptionThis paper proposes a new discretization technique with constant sampling time for time-invariant systems with uncertain parameters belonging to a polytopic domain. The aim is to provide an equivalent discrete-time representation of the continuous-time system whose ℋ2 guaranteed cost is an upper bound for the ℋ2 worst case norm of the original system. The resulting discrete-time model is described in terms of homogeneous polynomial matrices obtained by Taylor series expansion of degree ℓ. The discretization residual error, associated to the chosen approximation degree, is represented by additive norm-bounded uncertain terms. As a second contribution, new linear matrix inequality (LMI) relaxations for the computation of ℋ2 guaranteed costs for discrete-time systems with polynomial dependence on the uncertain parameter and additive norm-bounded uncertainties are proposed. A numerical experiment shows that the ℋ2 costs of the discretized system become tighter to the continuous-time ones as the order in the Taylor series expansion, the degrees in the Lyapunov function and the Pólya's relaxation level increase. © 2014 American Automatic Control Council.
dc.description
dc.description
dc.description5073
dc.description5078
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dc.languageen
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.relationProceedings of the American Control Conference
dc.rightsfechado
dc.sourceScopus
dc.titleℋ2 Guaranteed Cost Computation Of Discretized Uncertain Continuous-time Systems
dc.typeActas de congresos


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